How to Fix It: Help Americans Ditch Their Cars

"A big fiscal stimulus focusing on infrastructure, especially public transportation, might be one aspect of the solution. I say public transportation because with gas at $4 a gallon, we now know what the tipping point is for getting people out of their cars—millions of Americans are switching to public transportation, yet ironically, public transit is shrinking because there's not enough money for it. So this would pay triple dividends: It would help stimulate the economy, it would help get people back to work, and there'd be the energy and environmental savings."